From c50ac9a764c9022e69c9885b17083d70223cb1aa Mon Sep 17 00:00:00 2001
From: Luna <git@l4.pm>
Date: Mon, 30 Mar 2020 16:05:22 -0300
Subject: [PATCH] Change Unsupported to InterfaceNotFound

---
 lib/std/net.zig | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/std/net.zig b/lib/std/net.zig
index b4e2254da..1596df2d7 100644
--- a/lib/std/net.zig
+++ b/lib/std/net.zig
@@ -542,14 +542,17 @@ fn if_nametoindex(name: []const u8) !u32 {
     switch (os.errno(rc)) {
         os.EBADF => return error.BadFile,
         os.EINTR => return error.CaughtSignal,
-        os.EINVAL => unreachable,
         os.EIO => return error.FileSystem,
+        os.EINVAL => unreachable,
         os.ENOTTY => unreachable,
         os.ENXIO => unreachable,
-        os.ENODEV => return error.Unsupported,
+        // ioctl() sends ENODEV for an unknown scope id.
+        os.ENODEV => return error.InterfaceNotFound,
         else => {},
     }
 
+    std.debug.warn("ival={}\n", .{ifr.ifr_ifru.ifru_ivalue});
+
     return @bitCast(u32, ifr.ifr_ifru.ifru_ivalue);
 }